Journal
LANGMUIR
Volume 24, Issue 17, Pages 9241-9244Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la8001543
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Funding
- NIMS
- MEXT [17655011, 18205004, 18685003, 19049015]
- JSPS
- Grants-in-Aid for Scientific Research [18685003, 19049015, 18205004, 17655011] Funding Source: KAKEN
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Spatial distribution of surface enhanced Raman activity is visualized for two-dimensional (2D) nearly close-packed and well-ordered monolayer array of gold nanoparticles by using scanning near-field optical microscope. The 2D arrays exhibit highly nonuniform enhancement in Raman scattering, i.e., the regions along the edge of the 2D array are preferentially enhanced. We demonstrate that the spatial distribution of the localized electric field is also nonuniform and agrees well with that of the Raman enhancement.
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